M54 VARIABLE EXTENSION 15 - 18mm flattener it is used in order

it is used in order to compensate the focus position shifting caused by changes in temperature

The ASI533MC PRO uses a zero amp glow circuitry which eliminates the problem

Please contact us for an alternative solution

Optical thickness 10 mm Compatible telescopes

The new 2024 AM5N version features improved payload capacity without counterweights (up to 15 kg)

M54 VARIABLE EXTENSION 15 - 18mm flattener it is used in orderThis variable length adapter consists of a male M54 x 0. 75 thread on one end and a female M54 x 0. 75 thread on the other. Optical thickness of the adapter can be adjusted between 15 18mm. This is very useful for connecting accessories such as filter drawers or filter wheels to correctors which require a very specific backfocus distance. Specifications Connection side A Female M54 x 0. 75 Connection side B Male M54 x 0. 75 Optical length 15 18 mm SKU